Basori, Muhd Ridzuan Mansor, Maman Kartaman Ajiriyanto, Rosika Kriswarini, Bambang Soegijono, Sigit Dwi Yudanto, Dwi Nanto, Cahaya Rosyidan, Ferry Budhi Susetyo
An electrode that produces oxy-hydrogen gas (HHO) through electrolysis, commonly uses stainless steel (SS). Nickel (Ni) electrodeposition over copper (Cu) alloy promises to replace SS in the electrolyte solution for HHO production. Therefore, it needs a deep exploration of electrodeposition Ni over Cu alloy. In the present work, Ni film electrodeposition was conducted at various electrolyte solution temperatures. Watts solution was chosen due to its better performance than other plating bath compositions. The scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), X-ray diffractometer (XRD), Potentiostat, and hardness apparatus were employed to identify the characteristics of the Ni films over the Cu alloy. An increase in the solution temperature led to an increase in deposition rate, roughness, crystallite size, and transformation of nodules into pyramidal colonies. The high hardness of Ni-15 (Ni films synthesized over the Cu alloy at 15 ◦C electrolyte solution) is attributed to its smaller crystallite size. The Ni-15 sample has 38 nm of crystallite size and 232.26 HV of hardness. A lower corrosion rate was also found in the Ni-15 sample, about 1.84×10−3 mmpy. Therefore, it is recommended that the Ni-15 be selected as an electrode for HHO production because of its higher hardness and lower corrosion rate. © The Author(’s).
Department of Mechanical Engineering, Universitas Nasional, Sawo Manila Street, Jakarta, 12520, Indonesia; Fakulti Kejuruteraan Mekanikal, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, Melaka, Durian Tunggal, 76100, Malaysia; Centre for Advanced Research on Energy, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, Melaka, Durian Tunggal, 76100, Malaysia; Research Center for Nuclear Material and Radioactive Waste Technology, National Research and Innovation Agency, KST B.J. Habibie, Tangerang Selatan, Banten, 15314, Indonesia; PROUDTEK Lab., Department of Geoscience, Universitas Indonesia, Kampus UI, Depok, 16424, Indonesia; Research Center for Metallurgy, National Research and Innovation Agency, KST B.J. Habibie, Tangerang Selatan, Banten, 15314, Indonesia; Department of Physics Education, UIN Syarif Hidayatullah, Ir. H. Djuanda Street, Ciputat, 15412, Indonesia; Department of Petroleum Engineering, Universitas Trisakti, Kyai Tapa Street, Jakarta, 11440, Indonesia; Department of Mechanical Engineering, Universitas Negeri Jakarta, Rawamangun Muka Street, Jakarta, 13220, Indonesia
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